Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-675.cs

@@ -0,0 +1,34 @@
+// Compiler options: -r:test-675-lib.dll
+
+using System;
+
+public class B : A
+{
+	public override int GetHashCode ()
+	{
+		return 1;
+	}
+	
+	public override bool Equals (object o)
+	{
+		return true;
+	}
+	
+	public static bool operator == (B u1, B u2)
+	{
+		return true;
+	}
+
+	public static bool operator != (B u1, B u2)
+	{
+		return false;
+	}
+}
+
+public class Test
+{
+	public static int Main ()
+	{
+		return 0;
+	}
+}